Manicuring instrument



Nov. 193i. H. 1. sTEvENsoN ET AL. 1,832,260

MANICURING INSTRUMENT Y Filed Nov. 5, 192e L'TOR.

T URN YS.

resienteV New. 17,1931

narran sraras sai-ENT; OFFICE HARVEY J. STEVENSON AND MERRILL KESSLER, OFHLOS ANGELES, CALIFORNIA, AS'- SIGNOR-S T0 NATIONAL MANICURING IVIACI-INE COMPANY, OF LOS FORNIA, A CORPORATION 0F 'DELAWARE l BEANICURINGV INSTRUMENT Y Application led November that any null on said instrument as it is being manipulated is not through the outer flexibleY casing, but is direct` through the inner or drive shaft vproper and which is directly connected to the motor shaft.

Anotherobi ect of ourinventionis to provid-e improved means for Vdetachably securing the instrunientsvto the drive shaft so'they canr be readily interchanged.V

Another object is to provide, improved constructions in the` instruments which are used with the flexible drive shaft, wherebyto give lgreater efficiency from said instruments with less chance for possible injury to the hand.

In order to more `fully explain our invention, we have shown one practical embodiment thereof on the accompanying sheet of dra wines. which we will now describe.

Fieure 1 is an enlarged side elevation of a flexible shaft, partly in longitudinal'section to show the inner parts and connections of the complete outiit,'less the motor:

Figure 2 is a cross sectional view taken on line. 2 2 of Fig. 1;

. Figure 3 is a side vieuv of abradingrinstrument, partlv in section; f

Figure 2lis a left end view thereof: Figure 5 is a polishing;l instrument, partly in section. i Referring now in detail to the drawings, 6

rdesignates a drive shaft. provided at oneend with a head 7. adapted to bescrewed on to the motor shaft by which 1t isdriven. The

. other end of said drive shaft 6 is provided with a screw socket 8. to receive an.. interloclring' drive element 9, bavinna bearing collar A` or flanee 9 andan angular extension 9a, adapted to interfit with the various instruments to be used.` f

An outer casing 10, of'flexible construc- 5, 1928. sei-iai Np. 317,276.

coupling eleinent '13, secured to 'said casing- 1n any desirable manner, and-there- 1s also L' provided a second coillof Wire 14, to Vprevent too short bend of the-flexible casing 1 0, and shaft 6. j

ANGELES, CALI; if.;

The head 7, of the drive shaft 6, it Will be notedhasa bearing against the inside of the head 11, as at 7 which also servesas an anchorage for any pullvvhich might bey applied to the outer end of said drive shaftf: An f intermediatemember 15, is connected vvvith the coupling element 13, as by screw connection, andV is provided internally with a shoulder or flange 15, through-which the interlocking' drive elementk 9 is inserted to con.-

. neet with the end of the drive shaft 6and against which the collar 9 of lsaid element 6, direct, thus eliminatingpossible pulloni they flexible outer casing- 10, and making sure that any pull at theinstrument end of the driving connection would beanplied to the yinner drive shaft 6, instead ofthe flexibleY outer casing-10, by reason 'of the bearingk at 7 Vand atl, as l. ill be clear from Vthe draw- Y-Q'SA-Fg- 1r l i i The interinediatemember 15, is internally threaded at .itsgonen end, as at 15ato receive the shank of the instrument to be used therewith. Each vinstrument to be attached to said intermediate member has a body por:

tion, designated 16, with a threadedshank .16', adapted to iit ,into said, intermediate member 15, as willy be clear from Fig. 1, where one instrument is adjacent, ready to be inserted. The instrument proper, that is. the revolving' part ineach case, has a shaft 17, Iprovided with Van angular socket 17',

adapted to interfit with the extension 9a, with a telescoping` lit, whereby said shaft and on, said conical spiraledl point being designated' 18, and having a threaded shank 18 to screw into the shaft 17, as shown, with an interitting joint at 18a over the end ofthe body 16, to prevent the cotton from getting into the joint. The conical spiraled point is thus driven from the shaft 17, and its connections through the main drive shaft G to the motor shaft.

In Fig. 3, we have shown the instrument proper as comprising a disc 19, having its outer face concaved or dished to receive a ,disc of sand paper 20, or other,similarabrach ing material, to seat therein so that the rounded, smooth edge of said disc 19, overlaps said sand paper and thus makes it impossible for it to accidentally cut the iesh at its edge. The shaft 19 of said disc 19, screws vinto the shaft 17, as shown. rIhe sand paper 20 is held in place by means of a. screw 21, and can be interchanged or replaced when desired. The face of the said paper is held against the edge of the finger in the usual usage thereof. Y

In Fig. A5, we have shown a polishing instrument which consists of a shaft 22, with its Yend-threaded, as at 22 and adapted to screw Vinto the shaft 23, in the body 16, 'with a concaved. disc portion 22a on said shaft 22, with its edges formed into teeth, and with rubber, or otherbody 24 on said shaft 2 2, with a holding disc threaded on the outerend of said shaft 22, said holding disc being designated 25. Said cork or body 24, is shown .Covered with chamois 26, or other suitable covering and polishing material, stretched over the body and tucked into the Vopposed discs 22a and 25, and there held unt-il it is desiredto replace it with a fresh piece.

" i lEach of these instruments is adapted to be readily connected with the intermediate i member 15, Vinthe threaded open end 15a,

and to have its driving shaft interiit or in-V the hereto appended claims.`

le claim: l. In a manicuring` apparatus, a drive shaft, an outer casing, both being flexible, said drive shaft being operable in said outer casing,said drive shaft at its opposite ends being anchored in said outer casing to take any pull strain applied to said outer casing, whereby pulling strain on the instrument end of said outer casing will not stretch the same, an instrument detachably connected with said outer casing, with driving connections from the dri vc shaft to the instrument.

2. i manicuring instrument including a flexible outer casing, a drive shaft therein, said drive shaft having a head abutting inwardly against a part of said outer casing and at its opposite end, said drive shaft being Vprovided with an interlocking element abutting inwardly against a part of said outer casing.,l and adapted toprevent` stretching of said outer casing and to talie the strain of pull on the instrument end of said outer casing, an instrumentadapted to be detachably used in the end of said outer casing, and interconnecting drivin(Y connections from said interlocking element and said instrument for driving the latter from said drive shaft.

In an instrument of the character referredrto, in combination, an inner, flexible drive shaft having a head of larger diameter with shoulder and a threaded socket in Aits end, an cuter flexible casing therefor and having head withinwhieh said shaft head `lits with its shoulder abutting against the inner part of said head on said casing, an interlocking element screwed into the opposite end of said driveV shaft and having an enlarged part abutting inwardly against a part in said outer casing, whereby said drive shaft takes any pull strain on said outer casing land prevents its stretching, an instrument detachable to said outer casing, and interiitting, driving connections between said instrument proper and said interlocking element, whereby the latter is driven from said drive shaft.

- Il. In combination, an outer iieXible casing tube, an inner drive shaft, abutment means atthe opposite ends of said drive shaft within said casing to take Vthe strain of pull on said casing tube, an instrument detachable to said outer casing tube, and driving connections from the drive shaft within said casing tube to said instrument.

5. In combination, an outer flexible casing tube,an inner driveshaft, abutment means between the opposite ends ofl said drive shaft and the inside of said casing tube to take longitudinal strain on said casing tube, whereby to prevent stretching of the latter, an instrument proper having a conical point with spiraled means thereon to hold cotton or the like, and adapted tobe operatively connected with said casingtube and said drive shaft'.

6. In combination, a flexible casing tube, a drive shaft therein, abutment means on said drive shaft Awithin said casing tube and abutting inwardly at opposite ends against portions of said casing tube, whereby to prevent stretching of said casing tube, an instrument having a part detachably connected with said casing tube and an instrument proper operatively connected therein with said drive shaft,

whereby said instrument is driven fromsaid drive shaft. p

7. In combination, a vflexible outer tube, a drive shaft therein, anchor means at the opposite ends of the drive shaft to abutfinward ly against the inner portions of said outer tube and to take pull stra-in from said outer tube, and a manicuring instrument detachable from said outer tube, said instrument comprising a conical point provided with spiraled means from its larger end to its point for holding material thereon while revolving, means for connecting the body of the instrument to said outer tube, and means for connecting the conical point to said drive shaft Within said outer tube for driving the conical point.

Signed at Los Angeles, Los Angeles County, California, this 29th day of October, 1928.

HARVEY J. STEVENSON. MERRILL KESSLER; 

